Balloon Rocket STEM Worksheet
What you do (Push back, move forward): 1. Thread the string through the straw and tie it tightly between two chairs. 2. Blow up the balloon (not too much) and pinch its neck shut. 3. Tape the balloon to the straw, neck pointing backward. 4. Let go, measure how far it goes, and keep it away from faces.
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- 1.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
- 2.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it changes colour (c) it turns into a kite (d) it can pop loudly
- 3.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
- 4.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a balloon (c) a battery cell (d) turmeric powder
- 5.🧺 Which of these is needed for the balloon rocket? (a) a drinking straw (b) vinegar (c) a mirror (d) a magnet
- 6.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
- 7.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a mirror (c) a long string (d) sticky tape
- 8.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
- 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) sticky tape (b) turmeric powder (c) a long string (d) a balloon
- 10.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) sticky tape (c) vinegar (d) a balloon
- 11.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
- 12.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
- 13.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a long string (c) two chairs (d) turmeric powder
- 14.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a battery cell (c) a long string (d) sticky tape
- 15.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
- 16.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
- 17.True or false: the swimmer goes forward. (a) True (b) False
- 18.True or false: water from the oars goes backward. (a) False (b) True
- 19.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) distance it travels (b) how big we blow it (c) the slope of the string
- 20.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) it stays still (b) forward (c) straight down (d) backward
- 21.🔮 Predict: you blow the balloon up only a little. What happens? (a) it goes much farther (b) it turns into a kite (c) it goes less far (d) it flies off the string
- 22.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) the swimmer (d) water a swimmer pushes
- 23.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
- 24.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) yeast (c) two chairs (d) a drinking straw
- 25.🎈 When does the balloon rocket stop? (a) it never stops (b) when the air runs out (c) when it gets cold (d) when it turns blue
- 26.True or false: water a swimmer pushes goes forward. (a) False (b) True
- 27.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) True (b) False
- 28.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) distance it travels (c) the same tape (d) how big we blow it
- 29.🚀 In “push back, move forward”, which way does the balloon go? (a) goes backward (b) goes forward
- 30.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) two chairs (c) a drinking straw (d) a battery cell
- 31.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
- 32.True or false: gas from the rocket goes backward. (a) False (b) True
- 33.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True
- 34.🚀 Which of these goes forward? (a) water a swimmer pushes (b) water from the oars (c) the rocket (d) gas from the rocket
- 35.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) no change at all (b) more friction, less far (c) it goes faster (d) less friction
- 36.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) False (b) True
- 37.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same tape
- 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure it
- 39.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we measure it (c) we change it
- 40.True or false: yeast is needed for the balloon rocket. (a) True (b) False
Answer key
- goes backward
- it can pop loudly
- goes backward
- a balloon
- a drinking straw
- not needed
- a mirror
- True
- turmeric powder
- vinegar
- True
- goes backward
- turmeric powder
- a battery cell
- goes backward
- needed
- True
- True
- the slope of the string
- forward
- it goes less far
- the swimmer
- needed
- yeast
- when the air runs out
- False
- True
- how big we blow it
- goes forward
- a battery cell
- needed
- True
- True
- the rocket
- more friction, less far
- True
- the same tape
- we keep it the same
- we keep it the same
- False
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